6119fdc606
- ofpathname: speed up l2of_scsi() - ofpathname: failed to boot - update lparstat man page with -E option - enable support for ibm,drc-info property
135 lines
3.7 KiB
Diff
135 lines
3.7 KiB
Diff
From 6bc0d4f1e181c2254b7e35f9b3f77128f663a525 Mon Sep 17 00:00:00 2001
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Message-Id: <6bc0d4f1e181c2254b7e35f9b3f77128f663a525.1587532692.git.kamalesh@linux.vnet.ibm.com>
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In-Reply-To: <cover.1587532692.git.kamalesh@linux.vnet.ibm.com>
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References: <cover.1587532692.git.kamalesh@linux.vnet.ibm.com>
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From: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
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Date: Tue, 21 Apr 2020 08:00:49 -0500
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Subject: [PATCH V4 06/14] lparstat: Read SPURR, Idle_{PURR, SPURR} values
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To: powerpc-utils-devel@googlegroups.com
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Cc: Tyrel Datwyler <tyreld@linux.ibm.com>,
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Nathan Lynch <nathanl@linux.ibm.com>,
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Naveen N . Rao <naveen.n.rao@linux.vnet.ibm.com>,
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Gautham R . Shenoy <ego@linux.vnet.ibm.com>,
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Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
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Parse per-cpu
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/sys/devices/system/cpu/cpu/{spurr, idle_purr, idle_spurr} files to
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accumulate system wide SPURR, Idle PURR, Idle SPURR values like
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PURR value captured in /proc/powerpc/lparcfg. Calculating scaled
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utilization metrics, need them.
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Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
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---
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src/lparstat.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++
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src/lparstat.h | 11 +++++++++
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2 files changed, 71 insertions(+)
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diff --git a/src/lparstat.c b/src/lparstat.c
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index f5c0ce5..7c55a8c 100644
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--- a/src/lparstat.c
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+++ b/src/lparstat.c
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@@ -165,6 +165,61 @@ error:
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return -1;
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}
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+int parse_sysfs_values(void)
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+{
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+ unsigned long long spurr, idle_spurr, idle_purr, value;
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+ char line[SYSDATA_VALUE_SZ];
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+ struct sysentry *se;
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+ int i, rc;
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+
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+ spurr = idle_spurr = idle_purr = 0UL;
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+
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+ for (i = 0; cpu_sysfs_fds[i].spurr > 0; i++) {
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+ rc = pread(cpu_sysfs_fds[i].spurr, (void *)line, sizeof(line), 0);
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+ if (rc == -1) {
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+ fprintf(stderr, "Failed to /sys/devices/system/cpu/cpu%d/spurr\n",
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+ cpu_sysfs_fds[i].cpu);
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+ goto error;
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+ }
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+
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+ value = strtoll(line, NULL, 16);
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+ spurr += value;
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+
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+ rc = pread(cpu_sysfs_fds[i].idle_purr, (void *)line, sizeof(line), 0);
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+ if (rc == -1) {
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+ fprintf(stderr, "Failed to /sys/devices/system/cpu/cpu%d/idle_purr\n",
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+ cpu_sysfs_fds[i].cpu);
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+ goto error;
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+ }
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+
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+ value = strtoll(line, NULL, 16);
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+ idle_purr += value;
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+
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+ rc = pread(cpu_sysfs_fds[i].idle_spurr, (void *)line, sizeof(line), 0);
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+ if (rc == -1) {
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+ fprintf(stderr, "Failed to /sys/devices/system/cpu/cpu%d/idle_spurr\n",
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+ cpu_sysfs_fds[i].cpu);
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+ goto error;
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+ }
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+
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+ value = strtoll(line, NULL, 16);
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+ idle_spurr += value;
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+ }
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+
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+ se = get_sysentry("spurr");
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+ sprintf(se->value, "%llu", spurr);
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+ se = get_sysentry("idle_purr");
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+ sprintf(se->value, "%llu", idle_purr);
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+ se = get_sysentry("idle_spurr");
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+ sprintf(se->value, "%llu", idle_spurr);
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+
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+ return 0;
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+
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+error:
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+ close_cpu_sysfs_fds(threads_in_system);
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+ return -1;
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+}
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+
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static void sig_int_handler(int signal)
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{
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close_cpu_sysfs_fds(threads_in_system);
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@@ -750,11 +805,16 @@ void init_sysinfo(void)
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void init_sysdata(void)
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{
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+ int rc = 0;
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+
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get_time();
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parse_lparcfg();
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parse_proc_stat();
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parse_proc_ints();
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get_time_base();
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+ rc = parse_sysfs_values();
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+ if (rc)
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+ exit(rc);
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}
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void update_sysdata(void)
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diff --git a/src/lparstat.h b/src/lparstat.h
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index 617737b..eec59d6 100644
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--- a/src/lparstat.h
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+++ b/src/lparstat.h
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@@ -266,6 +266,17 @@ struct sysentry system_data[] = {
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.descr = "System Uptime",
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.get = &get_sys_uptime},
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+ /* /sys/devices/system/cpu/cpu<n>/ */
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+ /* Sum of per CPU SPURR registers */
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+ {.name = "spurr",
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+ .descr = "Scaled Processor Utilization Resource Register"},
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+ /* Sum of per CPU Idle PURR Values */
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+ {.name = "idle_purr",
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+ .descr = "Processor Utilization Resource Idle Values"},
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+ /* Sum of per CPU Idle SPURR Values */
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+ {.name = "idle_spurr",
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+ .descr = "Scaled Processor Utilization Resource Idle Values"},
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+
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{.name[0] = '\0'},
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};
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--
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2.25.3
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